Looking on the internet deeply has found these results:

tough-elastic is the most popular phrase on the web.

hard-elastic 162,500 results on the web	tough-elastic 186,700 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
out underpants. You're You're sloppy, you're rude, and I wish you worked half as hard as the elastic on those stretched	This material, in fact, is tough, elastic and transparent.

hard-elastic

162,500 results on the web

tough-elastic

186,700 results on the web

More popular!

out underpants.
You're
You're sloppy, you're rude, and I wish you worked half as hard as the elastic on those stretched